Steve'sDigicams

PeterP · Sep 24, 2005, 2:27 PM

From Original HDR posted as a poll.
First attempt at HDR.

Input: 5 raw images from Canon EOS 20D
Manual exposure F16, @ ev-2, ev-1, ev 0, ev+1, ev+3
32-bit HDR radience mode converted to 16-bit viewable using tone maping.
Converted and resized to 8-bit web format in PS CS2.

Image register achieved through use of Tripod and cable release.

Peter

ozematt · Sep 25, 2005, 4:49 AM

so pardon my ignorance but

what is HDR?

nice image by the way

matt

PeterP · Sep 25, 2005, 12:02 PM

:-) HDR stands for High Dynamic Range.

Some examples:

Code:

Standard CRT &lt; 100:1
Average LCD   200:1, Sony makes one that can do 600:1
8-bit jpg      256:1
12-bit raw  4096:1
Human eye   10,000:1
Outdoor Sunlight  1,000,000:1
HDR Radience file  infinite, limited by range in the captured input files

A lot more information on HDR and dynamic range can be found here http://www.hdrsoft.com/resources/dri.html#hdri

Peter.

Sep 25, 2005, 12:02 PM	#3
PeterP Senior Member Join Date: Jul 2003 Posts: 3,397	:-) HDR stands for High Dynamic Range. Some examples: Code: Standard CRT < 100:1 Average LCD 200:1, Sony makes one that can do 600:1 8-bit jpg 256:1 12-bit raw 4096:1 Human eye 10,000:1 Outdoor Sunlight 1,000,000:1 HDR Radience file infinite, limited by range in the captured input files A lot more information on HDR and dynamic range can be found here http://www.hdrsoft.com/resources/dri.html#hdri Peter.

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Sep 24, 2005, 2:27 PM	#1
PeterP Senior Member Join Date: Jul 2003 Posts: 3,397	From Original HDR posted as a poll. First attempt at HDR. Input: 5 raw images from Canon EOS 20D Manual exposure F16, @ ev-2, ev-1, ev 0, ev+1, ev+3 32-bit HDR radience mode converted to 16-bit viewable using tone maping. Converted and resized to 8-bit web format in PS CS2. Image register achieved through use of Tripod and cable release. Peter

Sep 25, 2005, 4:49 AM	#2
ozematt Member Join Date: Sep 2003 Posts: 74	so pardon my ignorance but what is HDR? nice image by the way matt